Pumping apparatus



March 21, 1933.

J. F. JAWOROWSKI I PUMPING APPARATUS Filed May 1, 1930' 4 Sheets-Sheetflllllllllll INVENYOR JOSEPH 1'. dlqwonowsm,

ATTORNEYS J. F. JAWOROWSKI March 21, 1933.

PUMPING APPARATUS Filed May 1, 1950 4 Sheets-Sheet 5 ONVENTOR Joszru I.JHWORYOWSKI.

ATTO RN 5Y5,

March 1933- J. F. JAwoRowsKl PUMPI NG APPARATUS Filed May 1, 1950 4Sheets-Sheet 4 INVENTOR ATTORNEY:

w v M R I H, mm. J 3 a Patented Mar. 21, 1933 UNITED STATES PATENTorrlcs JOSEPH F. J'A'WOROWSKI, F CLEVELAND, OHIO,- ASSIGNOR OFFIVE-EIGHTEENTHS TO SAIUEL E. DETTELBAGH, FIVE EIGH'IEENTHS '10 SAMEMERSON, AND TWO- EIGHTEENTHS TO EDGAR HAHN, ALL OF CLEVELAND, OHIOrename APPARATUS Application filed May 1, 1930. Serial No. 448,835.

This invention relates to an improvement in pumping apparatus, and moreparticularly in an apparatus of the ty e and kind shown and described inthe app ication for patent filed by me on the 14th day of May, 1929, Se-

rial No. 363,027, which is especially designed to pump and delivergasoline or'other liquids from a main source of supply to a measuringdispensing device. Thus the present apparatus includes a rotary pumpmounted to rotate in a horizontal plane and driven by an electric motorsupported upon a unitary part of the pump to provide a-compact operatingunit w ich may be readily installed in an upright position within asmall space and readily ta en apart for inspection and repairs. In thisassembly of parts the pump itself is particularly arranged andconstructed to trap and remain full of li uid when not operating so thatthe pump Wlll not drain or run dry but be constantly primed and kept ingood condition for instant use even after protracted periods of non-use.The structure is also so divided and arranged that the pumpin parts maybe readily reached and *remove without dismantling the motor and drivinmeans or detaching the entire pump from t e main supporting frame forthe ap-' paratus. Other advantages features of construction and usefularrangements of the operating parts also reside in the apparatus as willhereinafter appear and as more concisely set forth in the claims andshown in the accompanying drawings.

Thus, in the preferred embodiment of the invention shown in thedrawings,Fig. 1 is a perspective view of one form of dispensing cabinet in whichthe apparatus may be housed, and Fig. 2 is a front elevation of thepumping unit itself on a larger scale and removed from. the cabinet.Fig. 3 is a top view of the pump on a still larger scale, this viewbeing taken on line 3-3 of Fig. 4. Fig.

4 is a'side elevation of the motor and driving shaft, and a sectionalview of the supporting frame and the pump asembled, Fi 5 is a sec-.

tional view horizontally throng the supporting frame on line 5- 5 ofFig. 4. Fig. 6 isa sectional view vertically through the pump and. thelower part of the'supportthe supporting frame, this view being takenbody of liquid between the supply and dising frame, on line 6-6 of Fig.4. Fig. 7 is a sectional view horizontally through the mid-- dle part ofthe pump on line 77-of Fig. 4. Fig. 8 is a sectional View of the intakepart for the pump, this view being also taken on line 7 7 of Fig. 4, andFig. 9 is a side view of the lower part of the frame and the pump,

and a sectional view of the intake extension which projects downwardlyfrom one side of on line 9-9 0 Fig. 6. Fig. lOis an enlarged sectionalView of the head of the by-pass valve.

In Fig. 1 I show an upright dispensing cabinet A in which the presentoperating unit may be installed. The form and construction of thiscabinet may vary greatly, but the unit is especially constructed tofacilitate its installation in a small space and to simplify the makingof pipe connections therewith. Usually the supply pipe 2 for the unitextends to an underground supply tank, not shown, and the discharge pipe3 is connected to a flexible hose 4 suspended from a fitting 5 at oneside of the cabinet. The operating unit consists of a rotary pump Bsecured horizontally to the bottom of a supporting frame C upon which anelectric driving motor D is mounted. Frame C is a casting havingcircuitous fluid passages 'o-- therein which permit the attachment ofthe separate supply and discharge pipes 2 and 3, respectively, directlyto the frame, and the pump B is also detachably connected to this framein communication with the fluid passages therein so that it will lie ina lower plane than certain parts of said fluid passages to always trapand hold a large charge pipes. As constructed and arranged,

the pump body'and the pumping parts therein may also be bodily detachedfrom frame G without disconnecting the supply and discharge pipes, thesepipes being connected directly to frame C, as stated. Either thecomplete pump'may be removed or only a part thereof as occasion mayrequire, the

pump body 6 being bolted detachably to a separate plate 'or head 7 andthis plate being also removably secured to the bottom of respectivelyare located on opposite sides of frame C by other bolts 8.

To prolnote'the foregoing purposes, frame is an open rectangular castinghaving an overhanging top 9 and a laterally extending bottom 10 formedwith vertically-aligned openings 11 and 12, respectively. Motor D isseated removably upon top 9 with its hub 13 and motor shaft 14 extendingdownrotate.

wardly through opening 11, and the closure plate 7 of pump B is providedwith a radial ly ribbed hub 15 adapted to be centered within and toextend upwardly through opening 12 to place the pump shaft 16 axially inline with the motor shaft so that the two shafts may be operativelyconnected together by any suitable coupling device 17. Cast integralwith frame C at one side of bottom 10 is a hollow depending boss orextension 18 having an elbow-shaped entrance 19 and a horizontal flaringchamber 20 which may be said to be the intake end of circuitous passagea inasmuch as the vertical supply pipe 2 is screw connected with thebottom of this boss or extension. A cylindrical screen or strainer 21 isconiined removably within chamber 20 between a removable screw plug 22and a flat annular seat 23 surrounding an elbow-shaped outlet 24 whichalso forms part of circuitous passage a-. A coiled spring 25 isinterposed between the screw plug and the strainer to hold the latteryieldingly in position. Passage a extends horizontally above bottom 10on a sweeping curve from the upwardlyextending elbow-shaped outlet 24 toa downward ly-curved port 25 formed in bottom 10, see Figs. 5 and 6,"and port 25 communicates with a circular opening 27 in closure plate 7opposite a corresponding intake opening 28 in the upper flat face ofpump body 6. Plate 7 is also provided with a second circular opening 29adapted to .register with an outlet opening 30 in the top of pump body6, and bottom 10 of casting C includes an elbow portion 31 containing adischarge duct 32 which is a continuation of circuitous passage -aiwhenthe parts are assembled with duct 32 in communication with opening 29 inplate 7 and outlet opening 30, in body 6. An elbow fitting 33 is' boltedto the side of frame C opposite the discharge duct 32 to permit thevertical discharge pipe 3 to be connected thereto. Body 6 of the pumphas a flat top and bottom, and a circular chamber 35 extends verticallythrough the body at one side thereof, which chamber is divided by acentral wall or ring-shaped partition 36 to provide two working spaceswithin which a pair of round istons 37 and38 are adapted to T esepistons are mounted eccentrically in balanced relation on shaft 16,which rotates in. suitable bearings in bosses or extensions on theclosure plates 7 and 39, for body 6. Separate inlet and outlet ducts 40and 41,

the longitudinal medial line of body 6 and communicate with the separateworking spaces above and below partition 36 which has an extension 42 inthe form of a keyshaped bar adapted to interlock with the partition.Extension bar 42 occupies a centrol position within a cross slot 43 inbody 6, which slot is open to both piston chambers or spaces in body 6.

A pair of fiat abutment blades or plates 44 and 45, respectively, areslidably seated in slot 43 above and below the dividing bar 42, and theinnerends of these blades project into the working spaces and haveriding contact with the peripheral surfaces'of the eccentric pistons,thereby separating the inlet and outlet ducts completely where theycommunicate with the working spaces.

The blades 44 and 45, are controlled and held in their proper workingrelations by a rocking lever 46 and a compression spring 47 which isinterposed between a supporting plunger 48 and an adjustable sealing nut49 seated within body 6 at one side of a transverse by-pass passage 50therein. Plunger 48 is a cylindrical piece free to reciprocate in around bore in body 2, and spring 47 is seated within a recess in one endof this plunger, while its opposite end is bifurcated to receive theflat-sided rocking lever 46. An axial passage 51 in the plunger permitsthe fluid under pressure in compartment 52 to pass into the spacebeneath nut 49 so as to equalize the pressure on this part, and thebifurcated portions of the plunger are grooved transversely to receiveand rest astride aishort trunnion or pivot shaft 53 located mid-lengthof rocking lever 46,

thereby positioning this lever centrally in respect to the slidableblades so that the rounded ends 54 thereof may bear against the smoothflat outer edges of said blades. The rocking lever 46 extends lengthwiseof a slot 55 in the middle wall in body 6, thereby keep- 1 ing italigned with both blades 44 and 45. By-pass passage 50 communicates withcorresponding ends of the inlet and outlet ducts 40 and 41 and containsa beveled valve seat 56 against which a beveled valve 57 is pressednormally by a spring 58. This valve opens automatically and permits thefluid to circulate through the pump should the discharge be checked orcut-off while the pump is running. To prevent shattering, the beveledhead of the valve is provided with a short cylindrical extension 58adapted to enter a reduced part of the assage in advance of the beveledseat, w ile the main body of the valve conforms closely in dialne'ter toa shallow counterbore 59 surrounding the beveled seat, whereby a smallamount of liquid may be trapped in the counterbore when the valvecloses, thus cushioning the valve as it seats. A large screw plug 60closes a side entrance to by-pass passage 50 opposite nut 49 so thatthis nut may be reached from the outside and removed in as sembling anddis-assembling operations.

What I claim is:

1. A pumping apparatus, including an open frame adapted to be attachedtoa support, parallel perforated shelves extending laterally from saidframe, a motor mounted upon the top shelf having its shaft extendingdownwardly through the perforation of the top shelf, a rotary pump, acover plate for said pump provided with a radially ribbed hub for theshaft of the pump attached to the bottom shelf of said frame with saidhub portion extending through the perforation of said bottom shelf forcentering the shaft of said pump with respect to said bottom shelf, acoupling member connectin said shafts, circuitous fluid passages in saldbottom shelf extending substantially above the top surface thereof andterminating in its bottom face, and intake and dischar e passages forsaid pump arranged in sai cover plate below said bottom shelf andcommunieating with-said circuitous fluid passages to trap a body ofliquid within said pump between the inlet and discharge passagesthereof.

2. A pumping apparatus according to claim 1, wherein one of thecircuitous passages of said bottom shelf is downwardly extended andincludes a seat for a removable strainer.

3. A pump unit comprising an open supporting frame having laterallyextending recessed and perforated shelves inverted with respect to eachother, a motor mounted at one end of said frame upon one of said shelveshaving a shaft extending into said frame between said shelves, a rotarypump suspended from the other shelf at the 0pposite end of. said frameand including a cover member provided with a series of radially arrangedre-enforcing ribs having shouldered extensions, passing through saidother shelf and seating with their shouldered portions against saidother shelf for spacing said cover member fromsaid other shelf andforming a series of drain openings between said other shelf and covermember and centering said pump with respect to said other shelf, saidrotary pump having a shaft extending into said frame in axial alignmentwith the shaft of said motor and a coupling connecting said shaftswithin said 'open frame;

In testimony whereof I hereby alfix my. signature.

JOSEPH F. JAWOROWSKI.

